#include "llvm/CodeGen/SelectionDAG.h"
#include "SDNodeDbgValue.h"
+#include "llvm/ADT/APSInt.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallSet.h"
return dyn_cast_or_null<ConstantFPSDNode>(getSplatValue(UndefElements));
}
+int32_t
+BuildVectorSDNode::getConstantFPSplatPow2ToLog2Int(BitVector *UndefElements,
+ uint32_t BitWidth) const {
+ if (ConstantFPSDNode *CN =
+ dyn_cast_or_null<ConstantFPSDNode>(getSplatValue(UndefElements))) {
+ bool IsExact;
+ APSInt IntVal(BitWidth);
+ APFloat APF = CN->getValueAPF();
+ if (APF.convertToInteger(IntVal, APFloat::rmTowardZero, &IsExact) !=
+ APFloat::opOK ||
+ !IsExact)
+ return -1;
+
+ return IntVal.exactLogBase2();
+ }
+ return -1;
+}
+
bool BuildVectorSDNode::isConstant() const {
for (const SDValue &Op : op_values()) {
unsigned Opc = Op.getOpcode();